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Patents for John C. Crane
Patents 1 - 3 of 3
Number	Title	Classification(s)
62,476	Improvement in lock-up safety-valves	137/534
62,477	Improvement in lock-up safety-valves	137/470, 137/534
63,614	Improvement in head-blocks for sawmills	83/404, 83/508.1

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